4921986 has 8 divisors (see below), whose sum is σ = 9843984. Its totient is φ = 1640660.

The previous prime is 4921949. The next prime is 4922011. The reversal of 4921986 is 6891294.

It is a sphenic number, since it is the product of 3 distinct primes.

4921986 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410160 + ... + 410171.

It is an arithmetic number, because the mean of its divisors is an integer number (1230498).

Almost surely, 2^4921986 is an apocalyptic number.

4921986 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4921986 is a wasteful number, since it uses less digits than its factorization.

4921986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820336.

The product of its digits is 31104, while the sum is 39.

The square root of 4921986 is about 2218.5549350873. The cubic root of 4921986 is about 170.1035816265.

The spelling of 4921986 in words is "four million, nine hundred twenty-one thousand, nine hundred eighty-six".